Climate Irkutsk International Airport 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Irkutsk International Airport (UIII) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	68.6	83	67	66	56	87
February	76.7	90	68	77	77	82
March	90.6	98	91	91	93	86
April	91.5		91	94	92	94
May	88.6		88	98	81	94
June	86.1		87	86	77	92
July	79.7		85	82	78	84
August	75.3		82	93	52	68
September	76.8		72	90	78	68
October	83.3		88	84	82	80
November	72.0		74	68	84	67
December	57.6		55	62	71	57
Average	81.4	91.0	80.6	84.8	77.0	81.0

10th best VFR conditions of Russia

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	83.5	92	75	85	74	93
February	88.7	95	86	90	87	90
March	95.1	99	95	95	96	91
April	96.4		93	98	97	98
May	96.0		94	100	94	99
June	95.6		96	92	92	100
July	89.5		90	90	90	93
August	85.9		88	96	68	78
September	87.1		79	96	85	82
October	92.2		95	94	91	89
November	84.1		84	79	91	81
December	77.3		76	81	86	71
Average	90.7	95.5	88.4	92.4	87.7	89.6

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-13.3	-12	-14	-11	-16	-11
February	-10.9	-11	-7	-9	-10	-7
March	1.8	3	3	-1	1	2
April	10.2		6	10	8	14
May	16.8		15	21	13	18
June	23.2		23	23	21	23
July	24.2		25	23	24	25
August	22.0		24	21	22	21
September	15.5		17	16	14	16
October	8.2		11	7	9	6
November	-5.9		-5	-4	-1	-2
December	-13.5		-15	-13	-10	-14
Average	5.4	-7.4	6.9	7.5	6.2	7.7

61st highest temperature of Russia

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	-24.7	-24	-25	-21	-25	-20
February	-23.4	-25	-21	-23	-23	-20
March	-12.6	-11	-11	-14	-12	-10
April	-3.2		-7	-3	-3	-1
May	3.2		2	4	3	4
June	9.8		10	10	9	10
July	12.8		14	12	12	14
August	10.7		12	8	11	12
September	3.7		5	3	3	4
October	-4.1		-2	-5	-4	-5
November	-15.3		-15	-15	-12	-12
December	-23.8		-25	-22	-21	-24
Average	-7.3	-20.1	-6.8	-5.2	-6.8	-4.0

10th lowest temperature of Russia

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	20.4	9	23	20	38	6
February	13.6	10	20	13	14	9
March	9.7	3	11	10	7	14
April	5.2		10	5	4	2
May	7.2		8	2	12	4
June	6.5		8	5	12	4
July	9.1		8	9	10	7
August	9.5		12	4	12	15
September	12.1		12	8	11	19
October	7.7		7	7	6	11
November	18.8		23	20	10	23
December	26.7		20	34	18	16
Average	10.8	7.0	12.3	9.4	11.8	10.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month	Average	2024	2023	2022	2021	2020
January	5.0	5	5	3	6	6
February	5.1	6	4	5	7	4
March	6.9	6	8	6	7	8
April	8.6		9	8	9	8
May	9.2		9	9	10	9
June	7.2		8	6	8	7
July	6.6		6	7	6	7
August	6.3		6	6	7	7
September	7.1		6	7	7	7
October	6.7		7	7	6	7
November	6.0		7	5	6	6
December	4.7		4	5	4	4
Average	6.7	5.6	6.7	6.4	7.1	6.8

61st highest wind speed of Russia

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	149°	300°	137°	320°	147°
February	214°	234°	252°	278°	178°
March	292°	304°	307°	269°	302°
April		293°	306°	299°	282°
May		287°	303°	304°	306°
June		291°	255°	287°	262°
July		286°	297°	236°	273°
August		237°	302°	294°	283°
September		297°	264°	289°	282°
October		221°	286°	274°	276°
November		318°	331°	174°	280°
December		323°	314°	019°	334°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.